From f6429cec697aaa8ab64e85b441ee6e4ad93642ca Mon Sep 17 00:00:00 2001
From: Powei Lin <poweilin1994@gmail.com>
Date: Mon, 11 Mar 2024 17:29:10 -0400
Subject: [PATCH] clean up

---
 src/gauss_newton_optimizer.rs | 7 ++-----
 src/linear.rs                 | 3 ++-
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/src/gauss_newton_optimizer.rs b/src/gauss_newton_optimizer.rs
index c17375c..91755ad 100644
--- a/src/gauss_newton_optimizer.rs
+++ b/src/gauss_newton_optimizer.rs
@@ -1,9 +1,6 @@
-use std::ops::Mul;
-use std::time::{Duration, Instant};
+use std::time::Instant;
 
-use faer::solvers::{SpSolver, SpSolverLstsq};
 use faer_ext::IntoNalgebra;
-use nalgebra as na;
 
 use crate::{linear::sparse_cholesky, optimizer};
 pub struct GaussNewtonOptimizer {}
@@ -31,6 +28,6 @@ impl optimizer::Optimizer for GaussNewtonOptimizer {
             let dx_na = dx.as_ref().into_nalgebra().column(0).clone_owned();
             self.apply_dx(&dx_na, &mut params, &problem.variable_name_to_col_idx_dict);
         }
-        return params;
+        params
     }
 }
diff --git a/src/linear.rs b/src/linear.rs
index 6e84e28..23dae08 100644
--- a/src/linear.rs
+++ b/src/linear.rs
@@ -1,6 +1,7 @@
-use faer::prelude::SpSolver;
 use std::ops::Mul;
 
+use faer::prelude::SpSolver;
+
 pub fn sparse_cholesky(
     residuals: &faer::Mat<f64>,
     jacobians: &faer::sparse::SparseColMat<usize, f64>,